Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Numerical Investigation of the Effect of Crack Shape on Leak Flow Characteristics in Pipelines

누설 모양에 따른 파이프 누수 특성에 대한 수치 해석 연구

  • Lee, Hyunmin (Department of Mechanical System Design Engineering, Seoul National Univeristy of Science and Technology) ;
  • Kim, Jungwoo (Department of Mechanical System Design Engineering, Seoul National Univeristy of Science and Technology)
  • Received : 2017.03.29
  • Accepted : 2017.04.14
  • Published : 2017.04.15
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Abstract

The effect of crack shape on the leak flow characteristics in pipelinesis investigated using computational fluid dynamics (CFD) simulations. In the present study, two different crack shapes are considered: axial crack andcircumferential crack. The present simulation results showed that under the same crack area, the aspect ratio influences the leak rate. When the aspect ratio is1, the leak rate reaches the minimum value. Moreover, the leak rate in the circumferentialcrack is slightly larger than that in the axial crack. The change in the leak rateaccording to the crack shape could be explained by the different velocitydistributions at the leak position depending on the aspect ratio.

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References

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